THE GEOLOGY OF LIMEKILNS, BATHURST DISTRICT. 297 



sitidce, and Cyathophyllidce are certainly present among them. 

 The brachiopoda include Spirifer, Orthis, and Strophomena. A 

 specimen of the latter genus was thought by Mr. Etheridge to be 

 near to, or identical with, S. corrugatella, an Upper Silurian fossil 

 which is mentioned by Professor Hutton as occurring in the 

 Takaka system, Baton River series, of New Zealand.* The 

 brachiopods and corals appear to indicate an Upper Silurian age 

 for the limestone beds, but I have not yet obtained a recognisable 

 specimen of Pentamerus Knightii, which occurs in so many of the 

 limestone beds of this Colony. A specimen from Molong (No. 19) 

 is exhibited, herewith, which may add another to the list given 

 by Mr. Etheridge of localities where this fossil occurs, f Once 

 or twice I thought I was on its track at Limekilns, but hitherto 

 it has eluded me. The cephalopoda promise to be very interest- 

 ing. When I sent my last parcel to Mr. Etheridge I had only 

 obtained two specimens. One of these he considered to be a 

 section of an Orthoceras, the other as possibly Gomphoceras. The 

 specimens now exhibited show examples of Orthoceras and Gom- 

 phoceras almost certainly, possibly Cyrtoceras, or one of the other 

 curved forms, and a specimen having apparently a beaded 

 siphuncle which may indicate affinities to Ormoceras. I hope to 

 make a good collection of these fossils which will be worthy of 

 description by Mr. Etheridge or some other competent palaeon- 

 tologist. 



The slates accompanying the limestones, as well as those on the 

 Bathurst road, are disappointing. They do not appear to be 

 much altered, and some of them effervesce slightly with acids, 

 but hitherto not a trace of a fossil has rewarded the most diligent 

 search. I do not despair, however, of finding some. 



The Devonian rocks have not yet been carefully examined, but 

 they are so similar to the beds near Glanmire, on the Wimburn- 

 dale and Gulf Creeks (see map), that nothing very different from 



* The Geology of New Zealand, by Capt. F. W. Hutton— Quart. Journ. 

 Geol. Soc, Vol. xli., (1865) p. 199. 



f Records, Geol. Surv. N.S.W., Vol. in., pt. ii., 1892. 



